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Find all files under /home/username/public_html/modules and set their permission to 640 | find /home/username/public_html/modules -type f -exec chmod 640 {} + |
Page through the contents of yourFile, adding a $ at the end of each line and replacing tab characters by ^I. | cat -vet file | less |
delete all files in the home directory which ahve the name core in them | find ~/ -name 'core*' -exec rm {} \; |
Search the regular files of the current directory tree for string "foo" | find . -type f -exec grep "foo" '{}' \; |
Replace all occurrences of 'previousword' with 'newword' in all regular files with '.cpp' extension under '/home/www' directory tree and modify them in-place | find /home/www -type f -name '*.cpp' -exec sed -i 's/previousword/newword/g' '{}' \; |
Find all Name* files under ../../$name-module and rename them by replacing 'Name' with $Name in their names | find ../../$name-module -name 'Name*' -type f -exec bash -c "mv \"\$1\" \"\${1/Name/$Name}\"" -- {} \; |
Find all directories named "0" in the current directory tree and create a tar archive of their RS* subdirectories | find . -type d -name "0" -execdir tar -cvf filename.tar RS* \; |
Recursively finds all 'STATUS.txt' files containing text 'OPEN' and prints containing folder of them. | fgrep --include='STATUS.txt' -rl 'OPEN' | xargs -L 1 dirname |
Merge content of decompressed files "$part0", "$part1", and so on | sort -m <(zcat $part0 | sort) <(zcat $part1 | sort) ... |
Perform case-insensitive search for file `TeSt123.txt' on the system | find / -iname TeSt123.txt |
Find all files under /home/username/public_html/sites/all/themes and set their permission to 640 | find /home/username/public_html/sites/all/themes -type f -exec chmod 640 {} + |
Delete all 1US* (case insensitive) files under current directory | find . -iname "1US*" -exec rm {} \; |
read all history lines not already read from the history file | history -n |
find md5sum of string 'hi' | echo -n hi | md5 |
Rename all files and directories under current directory tree by converting the names to small letters without descending into 'CVS' directory | find . -name CVS -prune -o -exec mv '{}' `echo {} | tr '[A-Z]' '[a-z]'` \; -print |
Find all the files which are accessed 50 days back | find / -atime 50 |
Change permissions to 644 for all directories under and below /path/to/someDirectory/ | find /path/to/someDirectory -type d -print0 | xargs -0 sudo chmod 755 |
Show all files in user's home directory that have read, write and execute permissions set for user, group and others. | find ~ -perm 777 |
Read a line from standard input into variable "message" with prompt "Please Enter a Message: " followed by a newline | read -p "Please Enter a Message: `echo $'\n> '`" message |
Delete in the background all files in /var/tmp/stuff1 and below that have not been modified in over 90 days | find /var/tmp/stuff1 -mtime +90 -delete & |
Find all files on the system whose names are 'composer.json' | find / -name composer.json |
Find all *.py files under and below the current directory and search them for "xrange" | find . -name '*.py' -exec grep --color 'xrange' {} + |
find all the files in current folder which have spaces and save the long listing of these files to log file before deleting them | find . -name "filename including space" -print0 | xargs -0 -I '{}' sh -c 'ls -aldF {} >> log.txt; rm -rdf {}' |
display all the empty files in the entire file system | find / -size 0 -print |
Save the user name in upper case of the current user in variable "v" | v=$ |
Look for *.jpg files on the system | find / -name “*.jpg” |
Prints last modified file in a current folder with modification time. | find . -type f | sed 's/.*/"&"/' | xargs ls -E | awk '{ print $6," ",$7 }' | sort | tail -1 |
SSH using parameters in $@ in master mode in the background without executing any commands and set the ControlPath to "$MASTERSOCK" | ssh -o ControlPath="$MASTERSOCK" -MNf "$@" |
Set permissions of command "node" to 755 | sudo chmod 755 $(which node) |
Search the home directory tree for video files | find ~ -type f -regex '.*\.\(mkv\|mp4\|wmv\|flv\|webm\|mov\)' |
Print "Shared Memory" if shared memory mounted at /tmp or print "Not Shared Memory" otherwise. | df /tmp | grep -q tmpfs && echo "Shared Memory" || echo "Not Shared Memory" |
Print the list of files and directories of the /etc directory | find /etc ! -name /etc |
set alias "s" for command 'it=$($)' | alias s='it=$($)' |
search for all the files in the folder /data/images which have been modified after /tmp/start and before /tmp/end and save the output list to output.txt | find /data/images -type f -newer /tmp/start -not -newer /tmp/end > output.txt |
Format the output of "..." as a tab separated table | ... | column -s$'\t' -t |
Archive "/home/path" to "path" on host "server" showing progress and statistics and remove files in the destination not found in the source | rsync -a --stats --progress --delete /home/path server:path |
Constantly write "y" to backingfile as a background process | yes > backingfile & |
Read a line from standard input into the first argument using an interactive shell with prompt "> " | read -e -p '> ' $1 |
Print all unique file paths under "dir1" compared to "dir2" | comm -23 < < | sed 's/^\//dir1/' |
Find files with size more than 200557600B and which are more than 2 days old under ${userdir}/${i}/incoming directory and remove them | find ${userdir}/${i}/incoming -mtime +2 -type f -size +200557600c -exec rm {} \; |
recursively change user of the direct public_html and all files into it to user owner | chown -R owner:owner public_html |
find all the mp3 files in the entire file system whose size is bigger than 10MB | find / -type f -name *.mp3 -size +10M -exec rm {} \; |
Search for 'pattern_to_search' in all regular files with '.txt' extension under '/directory/containing/files' and show the matched lines along with filenames | find /directory/containing/files -type f -name "*.txt" -exec grep -H 'pattern_to_search' {} + |
search for files named "WSFY321.c" in a case-insensitive manner | find . -iname "WSFY321.c" |
change the permissions of all the directories to 775 in the current folder | find . -type d -exec chmod 775 {} \; |
Print git branch currently checked out in a working directory. | git symbolic-ref HEAD 2>/dev/null | cut -d"/" -f 3 |
Answer "y" to all "Are you sure?" prompts from command "cp * /tmp" | yes | cp * /tmp |
Archive directory specified by variable "myFolder" to current directory. | rsync -av $myFolder . |
Find all directories under $1/.hg and set their SGID bit | find "$1"/.hg -type d -print0 | xargs chmod g+s |
Save a line of 100 random characters either "." or " " in variable "foo" | foo=$(cat /dev/urandom | tr -dc '. ' | fold -w 100 | head -1) |
Find all Makefile's in the current directory tree and look for line 235 in each of them | find . -name Makefile -print0 | xargs -0 grep -nH $ | grep :235: |
print the names of all of the unstripped binaries in the /usr/local directory tree. Builtin tests avoid running file on files that are not regular files or are not executable | find /usr/local -type f -perm /a=x | xargs file | grep 'not stripped' | cut -d: -f1 |
Find all regular files recursively in the current directory | find . -type f |
Copies ${FILE} to COLLECT folder with unique name formatted like 'job_XXXXXXXXX'. | cp "${FILE}" "COLLECT/$" |
Check if current shell is running within a 'screen' process. | pstree --show-parents -p $$ | head -n 1 | sed 's/\+.*/\1/' | wc -l |
Remove all .php files in the /var/www/ directory | find /var/www/*.php -type f -exec rm {} \; |
Find all files in $dir directory (non-recursive) and count them | find "$dir" -maxdepth 1 -type f | wc -l |
delete all the files in the current folder which do not belong to any user | find / -nouser -exec rm {}\; |
List all files in a current folder, separating names with semicolon | ls -1b | tr '\n' ';' |
Find all files named "file.ext" in the current directory tree and print the path names of the directories they are in | find $PWD -name "file.ext" -exec sh -c 'echo $' ';' |
Search for files/directories with a case insensitive .txt extension in entire file system | find / -iname '*.txt' |
Find all files/directories under '/usr' directory tree that have been modified exactly 5 minutes ago | find /usr -mmin 5 |
Find all files/directories under current directory that match the case insensitive regex ./\.* and show several lines of output from the beginning | find . -iregex './\.*' | head |
Show all files in /etc that are owned by root have been modified within the last minute | find /etc/ -user root -mtime 1 |
Go to directory specified by variable "somedir", but replacing leading ~ character by actual home directory. | cd $ |
change to a directory and search for a file in that directory | cd /nfs//office/ && find . -name '.user.log' |
Output the file name "file.txt' from the path "some/unknown/amount/of/sub/folder/file.txt" | basename "some/unknown/amount/of/sub/folder/file.txt" |
Remove all regular files under '/var/log/remote' directory tree that have not been modified in the last 14 days where day count starts from today | find /var/log/remote/ -daystart -mtime +14 -type f -exec rm {} \; |
Find all broken symlinks under current directory | find -type l -xtype l |
Follows symbolic link $BASH_SOURCE, and prints path to its target. | $(dirname $(readlink -f $BASH_SOURCE)) |
Find all *.* files under current directory | find . -type f -a -name '*.*' |
List all nfs mounts | mount -l -t nfs4 |
Print all user names and terminals of users who are logged in | who | awk '{ print $1, $2 }' |
Find all files/directories with 777 permission under '/apps/audit' and strip write permission for 'other' from them | find /apps/audit -perm -7 -print | xargs chmod o‑w |
extract "filename.tar.xz" with verbose output | $ tar xvfJ filename.tar.xz |
Show all running processes with a name matching "postgres" | ps -ef | grep postgres |
Use the octal form to find and print detailed information about all regular files in your home directory and below that have only the group permission set. | find . -perm 040 -type f -exec ls -l {} \; |
Find all files on the system whose names are 'autoload.php' | find / -name autoload.php |
Print unique lines in "file1" compared to "file2" in the order they appear | comm -23 < <|grep -f - file1 |
search for files in current folder using name patterns | find . -name "S1A*1S*SAFE" |
Print git branch currently checked out in a working directory. | git branch | grep "*" | cut -d ' ' -f 2 |
download contents of a website "http://example.com/" | curl http://example.com/ |
search for all the files in the current directory which have been modified in the last 24 hours. | find . -mtime -1 |
search for all the files ending with "fits" in the folder "/store/01" | find /store/01 -name "*.fits" |
Find every file/directory under /var/spool that was modified more than 60 days ago. | find /var/spool -mtime +60 |
Lists all directories in a current folder. | ls -d */ |
Search all files called "abc" that reside in the current directory tree for string "xyz" | find . -name abc | xargs grep xyz |
Make directory "dir1" | mkdir dir1 |
change the owner of all the files in the file system which belong to the user with the uid 999 | find / -user 999 -exec chown NEWUSER {} \; |
Save the first 3 lines output by 'yes' to 'file', and log the rest through 'more' which simply waits for user interaction at each page. | yes | awk 'FNR<4 {print >>"file"; close} 1' | more |
Find files and directories with the name RAID but don't traverse a particular directory | find . -name RAID -prune -o -print |
Find all file.ext files/directories under present working directory and print . for each of them | find `pwd` -name "file.ext" -exec echo $ \; |
Find all files in the current directory and below with extension .php and replace "php" with "html" in their names | find ./ -type f -name "*.php" | xargs -r rename "s/php/html/" |
find all files in current folder using name patterns | find . -iregex ".*packet.*" |
Find all files/directories under current directory tree with inode number 211028 and move them to 'newname.dir' | find . -inum 211028 -exec mv {} newname.dir \; |
Find all files under current directory and set read permission for group and other for these files | find . -type f -print0 | xargs -0 chmod go+r |
Remove trailing white spaces from all files under dir directory and keep backups of the originals | find dir -type f -print0 | xargs -0 sed -i .bak -E "s/[[:space:]]*$//" |
search for the directory "mysql" in the /etc folder | find /etc -name mysql -type d |
Split a file "file.tar.gz" into pieces with size 1024 MB | split -b 1024m file.tar.gz |
Remove all *.bak and *.backup files that were accessed last time more than 30 days ago | find . \ -type f -atime +30 -exec rm '{}' ';' |
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